code: def day_opt(request):
      return request.param
  
file_path: pandas/pandas/tests/tslibs/test_liboffsets.py
imports: from datetime import datetime
  import pytest
  from pandas._libs.tslibs.ccalendar import get_firstbday, get_lastbday
  import pandas._libs.tslibs.offsets
  from pandas._libs.tslibs.offsets import roll_qtrday
  from pandas import Timestamp
label_desc: Use image node_id 1 for calling a global function with example usage: day_opt(request) and returns: request